#include"mystdio.h"
#include"mymath.h"
#include<stdio.h>
#include<string.h>
int main()
{
  int a = 0;
  int b = 6;
  
  printf("%d + %d = %d\n", a, b, myAdd(a, b));

  printf("%d - %d = %d\n", a, b, Sub(a, b));

  myFILE *fp = my_fopen("./myfile.txt", "w");

  if(!fp) return 1;
  
  const char *msg = "我写的...\n";

  my_fwrite(fp, msg, strlen(msg));

  my_fclose(fp);

  return 0;

}
